Telegrapho phone



(No Model.)

I 2 sheets-sheet 1. M. WHELESS. TELEGRAPHOPHONE.

Patented Sept. 3, 1889.

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I UNITED'STATES' PATENT OFFICE.

MALONE WVHELESS, OF NASHVILLE, TENNESSEEASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO THE WORLD TELEGRAPHONE COMPANY, OF IVEST VIRGINIA.

TELEG RAPHOPHON E.

srnerrrcnrrou forming part of Letters Patent No. 410,305, datedSeptember a, 1889.

Application filed Beptemhor 12, 1888. Serial No. 285,233. (No model.)

To ctZZ whom it may concern: produced upon a graphophone there. In caseBeitknown thatI, MALONE VVHELEss,acit-iof the absence of the subscriber,he can on zen of the United States, residing at Nashville, his returnobtain the message also, this bein the county of Davidson and State ofTencomes a record which can be filed away for nessee, haveinventedaTelegraphophone and future use.

I do declare the following to be a full, clear, In the drawings heretoannexed, the letters and exact description of the invention, such as A Aindicate two graphophones-in circuit. will enable others skilled in theart to which This circuit may be a primary or an inducit appertainsto'make and use the same, reftion circuit, the latter being preferable,as

IO erence being had to the accompanying drawshown. The devices connectedto these grapho- 6o ings, and to the letters and figures ofreferphonesbeingidenticalthat is, all the graphoence marked thereon,which forma part of phones being constructed alikea descripthisspecification. tion of one answers for all. Figure 1 is a perspectiveview of two grapho- To the threaded bar a of the graphophone phones incircuit. Fig. 2 is a perspective A are hinged the two metallic arms B13' View, partly'broken away, of the diaphragms one above theother-insulated from the bar and supporting-arms. Fig. 3 is a section inand each other. The under arm B has atits line 00 00, Fig. 2. Fig. 4 isa side view of the end on the under side a metal point orstyreproducing-stylus, partly in section. Figs. lus b and on top acarbon contact I). To the 20 5 and 6 are detail views of thetransmitting under side of the end of the upper bar B is styli. ametallic point 12 which rests upon a car- This invention relates. to animprovement bon contact b, and to the upper side of this in electricmethods whereby the indentations bar 13 is another metal point b, whichrests upon the cylinder of a graphophone can be against a diaphragm bcarried by this arm 25 reproduced upon another cylinder, and at the B,preferably of gold-beaters skin. To this same time the vocal soundsrepresented by diaphragm is secured a pipe with an earthese indentationsare rendered audible. piece. To the threaded bar a, alongside of Theinvention consists in placingtwographoarms 13 B, is secured a stem 0,carrying an phones in circuit, so that the vibrations proannulus c, towhich is secured a metal dia- 30 duced at one graphophone by therecording phragm c. Sprung diametrically across and stylus moving overthe cylinder shall be taken over the annulus and secured thereto is anup by the reproducing-stylus and be rcproarch D. Supported vertically atone side of duced at the other graphophone, and making this arch is themagnet E, held adjustably identical indentations there at the same timethereto by pins e e entering slots d d. On

3 5 be transferred into sound-waves. the under side of the diaphragm cis secured In the use of the graphophone as it is now astylus 0 Theannulus c, with its diaphragm, operated sound-waves are converted intoinis much larger than the diaphragm b and dentations upon the surface ofa cylinder covers the latter. This relation brings the and can bereproduced at pleasure, as is well two styli b and c in almostthe sameplane 40 known. and over the cylinder F of the graphophone.

In telephoning as now practiced a serious Upon the diaphragm c is placedthe usual defect in the system is, that when a subscriber mouth-piece.(Shown in dotted lines, Fig. 3.) is called up and there is no responsethe caller The letter M indicates the cylinder of the cannot use theinstrument and must wait angraphophone, andm up the usual gear-wheels.

5 other opportunity, and by combining the prin- At each graphophone isvshown a closed pri- 5 ciple involved in these two systems it is posmarycircuit 0. p This circuit'when not in use sible by the use of myinvention to so connect is kept open by a switch. The two arms B 13' uptwo graphophones on a telephone-circuit are in the circuit, as clearlyshown in Fig. 1, that .not only Will the message he audibly re and thecircuit is closed at the metallic and 5o ceived at the receiver, but itwill also be recarbon contacts. The primary circuits are provided withthe inductive coils G, which are connected by the usual line-wire H andhave the grounds I I, the coils of the magnets E being in the inductivecircuit. It is evident that the two graphophones must be kept in motionwhile the message is being transmitted.

To operate the invention the two graphophones are set in motion, theprimary circuit at the sending-station being closed and the styliresting on the cylinders. The message is spoken through the mouth-pieceagainst the diaphragm c of the transmitter, and by means of therecording-stylus c the usual indentations are impressed upon thesending-cylinder M. As these indentations pass away from the stylus 0they come in contact with the reproducing-stylus b. This stylus Z) takesup the vibrations and transmits them to the carbon point Z9, where thelocal circuit is closed and the inductioacnrrents are sent out to theline equal in variation and tension to the primary disturbance. Thesecurrents passing over the line disturb the magnet at thereceiving-station, thereby disturbing the diaphragm actuated by themagnet as well as the stylus, which is attached to the under side of it,and the cylinder is indented with indentations equal to the disturbanceof the diaphragm. These indentations made upon the receiving-cylinderare identical with those made upon the sending cylinder, one being aduplicate of the other.

As the indentations upon the receiving-cylinder pass away from thestylus 0 they pass under the stylus Z), which disturbs the diaphragm band this disturbance makes the wave-sounds, which are articulate andaudible.

I am aware that it has been proposed to connect a phonograph with anordinary telephone-circuit, so that the messages received will berecorded as well as heard.

Having described my invention, what I claim 1s 1. The combination of agraphophone with an additional stylus resting in the groove made by thegraphophonc-stylus and closely behind said stylus, and electricconnections containing contacts varied by the additional stylus andextending to a suitable receiver.

2. In a combined telephone and graphephone, the combination of animpression-cylinder with a diaphragm having a stylus arranged upon oneside and an electro-magnet upon the other side arranged in circuit eX-tending from the transmitter to a distant instrument, and an additionalstylus controlling the contacts in. aprimary circuit, the secondary ofwhich extends to the receiver of the distant instrument.

3. In a combined telephone and graphephone, the combination of adiaphragm, an impression-cylinder, and a stylus between the diaphragmand impression-cylinder, and an electro-magnet upon the other side ofthe diaphragm in a circuit with and controlled by the transmitter of thedistant instrument, and an additional stylus varying the contact of theelectrodes in a circuit extending to the receiver of the distantinstrument.

4:. In a combined graphophone and telephone instrument, the combinationof an impression-cylinder and a suitable screw-shaft with suit-ablegearing for connecting said cylinder to the shaft with a diaphragmcarrying one stylus and an additional stylus, both movable laterally bysaid screw-shaft and proper elect ric circuits.

5. The combination of a pair of combined graphophone and telephoneinstruments located at different stations, each instrument comprising animpression-cylinder, two styli laterally movable on a single screw, adiaphragm carrying one stylus and an electromagnet upon its oppositeside, suitable electric circuits, and gearing connecting the screw andcylinder.

6. The combination of two graphophones, each provided with a diaphragmhaving a magnet and a stylus and two arms, one above another, one armhaving a stylus underneath and a contact-point on top, the other armhaving a contact-point underneath and resting on the othercontact-point, and a contactpoint on top and a diaphragm against thebottom of which the second contact-point rests, with an electriccircuit, the two arms being in circuit, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MALONE \VHELESS.

\Vitnesses:

GEORGE E. Novns, M. DORIAN.

